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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include <private/xyanimation_p.h>
#include <private/xychart_p.h>
#include <QtCore/QDebug>
Q_DECLARE_METATYPE(QVector<QPointF>)
QT_CHARTS_BEGIN_NAMESPACE
XYAnimation::XYAnimation(XYChart *item, int duration, QEasingCurve &curve)
: ChartAnimation(item),
m_type(NewAnimation),
m_dirty(false),
m_index(-1),
m_item(item)
{
setDuration(duration);
setEasingCurve(curve);
}
XYAnimation::~XYAnimation()
{
}
void XYAnimation::setup(const QVector<QPointF> &oldPoints, const QVector<QPointF> &newPoints, int index)
{
m_type = NewAnimation;
if (state() != QAbstractAnimation::Stopped) {
stop();
m_dirty = false;
}
if (!m_dirty) {
m_dirty = true;
m_oldPoints = oldPoints;
}
m_newPoints = newPoints;
int x = m_oldPoints.count();
int y = m_newPoints.count();
int diff = x - y;
int requestedDiff = oldPoints.count() - y;
// m_oldPoints can be whatever between 0 and actual points count if new animation setup
// interrupts a previous animation, so only do remove and add animations if both
// stored diff and requested diff indicate add or remove. Also ensure that index is not
// invalid.
if (diff == 1 && requestedDiff == 1 && index >= 0 && y > 0 && index <= y) {
//remove point
m_newPoints.insert(index, index > 0 ? newPoints[index - 1] : newPoints[index]);
m_index = index;
m_type = RemovePointAnimation;
}
if (diff == -1 && requestedDiff == -1 && index >= 0 && index <= x) {
//add point
m_oldPoints.insert(index, index > 0 ? newPoints[index - 1] : newPoints[index]);
m_index = index;
m_type = AddPointAnimation;
}
x = m_oldPoints.count();
y = m_newPoints.count();
if (x != y)
m_type = NewAnimation;
else if (m_type == NewAnimation)
m_type = ReplacePointAnimation;
setKeyValueAt(0.0, QVariant::fromValue(m_oldPoints));
setKeyValueAt(1.0, QVariant::fromValue(m_newPoints));
}
QVariant XYAnimation::interpolated(const QVariant &start, const QVariant &end, qreal progress) const
{
QVector<QPointF> startVector = qvariant_cast<QVector<QPointF> >(start);
QVector<QPointF> endVector = qvariant_cast<QVector<QPointF> >(end);
QVector<QPointF> result;
switch (m_type) {
case ReplacePointAnimation:
case AddPointAnimation:
case RemovePointAnimation: {
if (startVector.count() != endVector.count())
break;
for (int i = 0; i < startVector.count(); i++) {
qreal x = startVector[i].x() + ((endVector[i].x() - startVector[i].x()) * progress);
qreal y = startVector[i].y() + ((endVector[i].y() - startVector[i].y()) * progress);
result << QPointF(x, y);
}
}
break;
case NewAnimation: {
for (int i = 0; i < endVector.count() * qBound(qreal(0), progress, qreal(1)); i++)
result << endVector[i];
}
break;
default:
qWarning() << "Unknown type of animation";
break;
}
return QVariant::fromValue(result);
}
void XYAnimation::updateCurrentValue(const QVariant &value)
{
if (state() != QAbstractAnimation::Stopped) { //workaround
QVector<QPointF> vector = qvariant_cast<QVector<QPointF> >(value);
m_item->setGeometryPoints(vector);
m_item->updateGeometry();
m_item->setDirty(true);
m_dirty = false;
}
}
void XYAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
{
if (oldState == QAbstractAnimation::Running && newState == QAbstractAnimation::Stopped) {
if (m_item->isDirty() && m_type == RemovePointAnimation) {
if (!m_newPoints.isEmpty())
m_newPoints.remove(m_index);
m_item->setGeometryPoints(m_newPoints);
}
}
}
QT_CHARTS_END_NAMESPACE
#include "moc_chartanimation_p.cpp"
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